Question

1. Complex algebra problems. You can check your answer with
Matlab: *real, imag, abs, angle phase, conj.* You are given:
A = 1+2j ; B = 2+1j

**a. Find A*B, A/B, A^2 abs(A) and abs(B). Answers should
be simplified in (a+bj) form.**

**b. B in polar form (i.e. magnitude and angle in
degree)**

**c. Find exp(A) in polar and rectangular form. Hint use
Euler formula.**

2. Matrix operation problems. Use Matlab: A = [1 2 3; 4 5 6; 7 8 9], B = [1 1; 2 2; 3 3], C = [A B], D = zeros(3) and E = eye(3).

**a. Find A*B, A*C, A*E, and A. *E (Notice " .* "
operator)**

**b. Find inv(A)**

Answer #1

1.

2,3

What is the MATLAB code used to solve the following
equations?
a. Express (2 + 3j)*(1-5j)* in recantgular form
b. Express e^(-jpi/7) - pi/7 in recantgular form
c. Express -2e^(-j90 degrees) in recantgular form
d. Express 2 - sqrt-2 in polar form
e. Find the magnitude of e^e^(2-j)

. In this question, i ? C is the imaginary unit, that is, the
complex number satisfying i^2 = ?1. (a) Verify that 2 ? 3i is a
root of the polynomial f(z) = z^4 ? 7z^3 + 27z^2 ? 47z + 26 Find
all the other roots of this polynomial. (b) State Euler’s formula
for e^i? where ? is a real number. (c) Use Euler’s formula to prove
the identity cos(2?) = cos^2 ? ? sin^2 ? (d) Find...

1. Write a MATLAB function to determine the discrete-time
Fourier Transform (H(?)) of the following sequence. Plot its
magnitude and phase. You can use the dtft command and use the abs,
angle and plot commands to plot the results.
x(n) = {4, 3, 2, 1, 2, 3, 4}.
2. Analytically determine H(z) and plot its magnitude and phase
for the following system using freqz.
y(n) = 2x(n) + x(n ? 1) ? 0.25y(n ? 1) + 0.25y(n ? 2).
3....

Below are three different codes in Matlab, please copy those
your matlab and answer the following questions:
Thank you for your help!!!!
1.1 Baseband Signal
a) Plot time versus baseband signal (m_sig).
b) Plot freq versus baseband signal spectrum (M_fre).
1.2 Amplitude Modulation – Suppressed Carrier.
a) Plot time versus the DSB-SC signal (s_dsb).
b) Plot freq versus the DSB-SC signal spectrum (S_dsb).
1.3 Coherent Demodulation
a) Plot freq versus the pre-filtered signal (S_dem).
b) Plot freq versus the post-filtered...

Part 2: Solve the following problems in
MATLAB
1. Fill in the function E = myElim(A, r_entry, r_pivot, c) to
create an m by m
elimination matrix ??. Remember that
an elimination matrix looks like an identity matrix with one extra
entry of ?? in row r_entry and column r_pivot.
2. Fill in the function M = myMult(A, c_pivot) to create an m by
m multiplier matrix ??. Remember that a multiplier matrix looks
like an identity matrix with the...

1. Determine two coterminal angles (one positive and one
negative) for each angle. Give your answers in radians. (Enter your
answers as a comma-separated list.)
(a) 5π 6
(b) − 7π 3
2. Convert the degree measure to radian measure. Round to three
decimal places.
75° radians
3. Convert each angle measure to decimal degree form.
(a) 52° 45'
°
(b) −134° 30'
°
4.Find the length of the arc on a circle of radius r
intercepted by a central angle θ....

1. Answer Following Questions, Show work, clear hand writing,
thank you
a. Set up (i.e. DO NOT SOLVE) an integral to find the volume of
the solid obtained when the given region is rotated about the given
axis. The region bounded by y = 2x^2 and y = 2x^3 about the line x
= −1
b. get the general antiderivative of f(x) = (x^2)*(e^−x)
c. Find the length of the polar curve r = 2cosθ

Problems
1. Two independent random variables X and Y
have the probability distributions as follows:
X 1 2 5
P (X) 0.2 0.5 0.3
Y 2 4
P (Y) 0.7 0.3
a) Let T = X + Y. Find all possible values of T.
Compute μ and . T σ T
b) Let U = X - Y. Find all possible values of U.
Compute μ U and σ U .
c) Show that μ T
= μ X +...

You can use graphs or simple algebra to answer this
question; either way, be sure
to show all of your work and/or explain your
reasoning.
Two firms can reduce emissions of a pollutant at the
following marginal costs:
MC1 = $3 q1
MC2 = $1 q2
where q1 and q2 are, respectively, the amount of
emissions reduced by the first
and second firms. Total pollution-control cost functions
for the two firms are
Respectively:
TC1 = $100 + $60
(q1)2
TC2...

Please explain how so that I can get it
Both problems please and problem 1 only for part (e). Problem2
only part(c).
P1)The expression x = 7.70
cos(2.50πt + π/2) describes the position
of an object as a function of time, with x in centimeters
and t in seconds. What are the following?
(a) frequency
1.25Hz
(b) period
0.8 s
(c) amplitude
7.70 cm
(d) initial phase of the object's motion
1.57 rad
(e) position of the particle at t...

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